CustomGLTF
by Maiky_hda
CustomGLTF is a Fabric library that lets other mods load, animate, attach and render standard glTF and GLB 3D models on the client.
What it does
The library reads glTF files in the standard .gltf and .glb forms, including meshes, textures and bones, and draws them in game. Its skeletal animation system includes node animation, a built-in animation controller with crossfading and looping, and a state machine. Items, weapons, particles and other models can be attached to specific animated bones through a socket system, and bone rotations and translations can be set from code for turret aiming, vehicle steering or head tracking. Exact 3D bounding boxes can be calculated from model geometry for hitboxes.
Rendering uses GPU-accelerated skinning with several OpenGL profiles (GL43, GL40, GL33, GL30) and a CPU fallback. Shader packs such as Iris and OptiFine are supported, but the mod warns in chat, in English and German, when shaders are active, and models render properly only with shaders disabled. The mod is client-side only, so servers do not need it, and it runs on Fabric for Minecraft 1.20.1. The code is released under the MIT License and is open source. Files target 1.20.1 – 1.20.6, and the latest file is 1.2 for 1.20.1. The mod is required by Mutated Mobs.
Key features
glTF and GLB loading
Standard .gltf and .glb models are loaded with their meshes, textures and bones intact.
Skeletal animation
Node animation, crossfading, looping and a state machine are built in, driven by an animation controller.
Bone sockets
Items, weapons, particles and other models can be attached to specific animated bones.
Procedural bone overrides
Bone rotations and translations can be set from code, for turret aiming, vehicle steering or head tracking.
Dynamic bounding boxes
Exact 3D bounding boxes are calculated from model geometry for use as hitboxes.
GPU skinning
Skinning runs on the GPU through several OpenGL profiles, with a CPU fallback when none is available.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Required by 1 mod
How it compares
MCglTF is available for Fabric and Forge across 1.12.2 – 1.19.3, is client-side only and is released under the MIT License, but it is not open source. Suspicious Shapes covers Fabric and Quilt for 1.20 – 1.21.4, is client-side only and is open source under the MIT License. Canvas Renderer runs on Fabric and Quilt for 1.17.1 – 1.20.2 and is open source under the GNU Lesser General Public License v3.0 only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| CustomGLTF | Fabric | 1.20.1 – 1.20.6 | Client-side only | 2026-08-28 |
| MCglTF | Fabric and Forge | 1.12.2 – 1.19.3 | Client-side only | 2023-07-15 |
| Suspicious Shapes | Fabric and Quilt | 1.20 – 1.21.4 | Client-side only | 2025-01-21 |
| Canvas Renderer | Fabric and Quilt | 1.17.1 – 1.20.2 | Client-side only | 2024-01-21 |
Questions
Does CustomGLTF need to be installed on the server?
Why do models render incorrectly with shaders on?
Which Minecraft versions does CustomGLTF support?
In the catalog
CustomGLTF is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 11,154 mods support Minecraft 1.20.6.
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What the author says
Notice: 1.20.4 is no longer under maintenance. Please use Minecraft 1.20.1 for all latest fixes, features, and updates. CustomGLTF is a client-side library mod that allows you to load, animate, attach, and render standard glTF / GLB 3D models in Minecraft.
Official listing
- Modrinth page
- modrinth.com/mod/customgltf
- Owner
- Maiky_hda
- Published
- 2026-04-03
- Updated on Modrinth
- 2026-08-28
- Facts verified
- 2026-10-15